1253653320 has 32 divisors (see below), whose sum is σ = 3760960320. Its totient is φ = 334307520.

The previous prime is 1253653279. The next prime is 1253653327. The reversal of 1253653320 is 233563521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1253653327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5223436 + ... + 5223675.

It is an arithmetic number, because the mean of its divisors is an integer number (117530010).

Almost surely, 2^1253653320 is an apocalyptic number.

1253653320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253653320 is an abundant number, since it is smaller than the sum of its proper divisors (2507307000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253653320 is a wasteful number, since it uses less digits than its factorization.

1253653320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447125 (or 10447121 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 1253653320 is about 35406.9671110080. The cubic root of 1253653320 is about 1078.2657695292.

It can be divided in two parts, 12536 and 53320, that added together give a palindrome (65856).

The spelling of 1253653320 in words is "one billion, two hundred fifty-three million, six hundred fifty-three thousand, three hundred twenty".